Abstract
Acetobacter diazotrophicus possesses a pyrroloquinoline quinone-linked glucose dehydrogenase (PQQ-GDH). The enzyme seemingly belongs to the type II PQQ-GDH enzymes and, at least under the culture conditions tested, the organism synthesizes enough PQQ to saturate the apo-enzyme. The synthesis of this enzyme is stimulated when the organism is grown under N2-fixing conditions. It is proposed that this enzyme may play an important role in providing extra energy in N2-fixing cells.
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Galar, M.L., Boiardi, J.L. Evidence for a membrane-bound pyrroloquinoline quinone-linked glucose dehydrogenase in Acetobacter diazotrophicus . Appl Microbiol Biotechnol 43, 713–716 (1995). https://doi.org/10.1007/BF00164778
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DOI: https://doi.org/10.1007/BF00164778